did you work out how to open this lu files?
This one doesn't got source to edit anything, but the one uploaded to mirfiles got source code of .lua files, just need to compile them
I did few tests, if you add or edit something in GameShop it disappear, translated only 1 item in sv and all my bag converted to potions "unknown obj", don't know about gm commands. Just in console of server put 'level charname 0-99999999' and it will change your level. Been translating NPC's in-game with phone, most are merchants for armours, teleports, refines, but nothing to buy, seems corrupted shops, if u try to add or remove anything or edit. It will crash all items, dunno if needs to copy any file to htdocs folder to update items.. dunno, I'll have a look tomorrow, enough for today